Analysis Summary
Notes:
- 1) No attempt has been made to eliminate the non-significant decimal places.
- 2) This batgrbproduct analysis is done using the HEASARC data.
- 3) This batgrbproduct analysis is using the flight position for the mask-weighting calculation.
======================================================================
BAT GRB EVENT DATA PROCESSING REPORT
Process Script Ver: batgrbproduct v2.46
Process Start Time: Mon Jan 20 07:52:29 EST 2014
Host Name: batevent1
Current Working Dir: /local/data/batevent/batevent_reproc/trigger287260
======================================================================
Trigger: 00287260 Segment: 000
BAT Trigger Time: 208290482.688 [s; MET]
Trigger Stop: 208290483.712 [s; MET]
UTC: 2007-08-08T18:28:00.545880 [includes UTCF correction]
Where From?: TDRSS position message
BAT
RA: 6.7657965873297 Dec: 1.16645825164436 [deg; J2000]
Catalogged Source?: NO
Point Source?: YES
GRB Indicated?: YES [ by BAT flight software ]
Image S/N Ratio: 13.2
Image Trigger?: NO
Rate S/N Ratio: 26.0959767013998 [ if not an image trigger ]
Image S/N Ratio: 13.2
Analysis Position: [ source = BAT ]
RA: 6.7657965873297 Dec: 1.16645825164436 [deg; J2000]
Refined Position: [ source = BAT pre-slew burst ]
RA: 6.75541676803971 Dec: 1.17995009719578 [deg; J2000]
{ 00h 27m 01.3s , +01d 10' 47.8" }
+/- 1.21463955997176 [arcmin] (estimated 90% radius based on SNR)
+/- 0.490476840687234 [arcmin] (formal 1-sigma fit error)
SNR: 23.0398265960603
Angular difference between the analysis and refined position is 1.021279 arcmin
Partial Coding Fraction: 0.4726562 [ including projection effects ]
Duration
T90: 58.431999951601 +/- 11.5085832385286
Measured from: 0.00800001621246338
to: 58.4399999678135 [s; relative to TRIGTIME]
T50: 20.6399999856949 +/- 5.76728426718169
Measured from: 1.94400000572205
to: 22.5839999914169 [s; relative to TRIGTIME]
Fluence
Peak Flux (peak 1 second)
Measured from: 0.716000020503998
to: 1.716000020504 [s; relative to TRIGTIME]
Total Fluence
Measured from: -0.695999979972839
to: 69.1920000016689 [s; relative to TRIGTIME]
Band 1 Band 2 Band 3 Band 4
15-25 25-50 50-100 100-350 keV
Total 0.535874 0.718552 0.589102 0.189780
0.051406 0.053956 0.048122 0.041902 [error]
Peak 0.035446 0.092198 0.085141 0.023174
0.007660 0.008698 0.008475 0.006549 [error]
[ fluence units of on-axis counts / fully illuminated detector ]
======================================================================
====== Table of the duration information =============================
Value tstart tstop
T100 69.888 -0.696 69.192
T90 58.432 0.008 58.440
T50 20.640 1.944 22.584
Peak 1.000 0.716 1.716
====== Spectral Analysis Summary =====================================
Model : spectral model: simple power-law (PL) and cutoff power-law (CPL)
Ph_index : photon index: E^{Ph_index}
Ph_90err : 90% error of the photon index
Epeak : Epeak in keV
Epeak_90err: 90% error of Epeak
Norm : normalization at 50 keV in both the PL model and CPL model
Nomr_90err : 90% error of the normalization
chi2 : Chi-Squared
dof : degree of freedo
=== Time-averaged spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.444 -0.140 0.140 - - - 1.93e-03 -1.56e-04 1.55e-04 53.470 57
CPL -1.170 -0.346 0.583 156.640 -156.640 -156.640 2.64e-03 -8.26e-04 2.38e-03 52.680 56
=== 1-s peak spectral analysis ===
(Best model with acceptable fit: PL)
Model Ph_index Ph_90err_low Ph_90err_hi Epeak Epeak_90err_low Epeak_90err_hi Norm Nomr_90err_low Norm_90err_hi chi2 dof
PL -1.127 -0.172 0.175 - - - 1.67e-02 -1.76e-03 1.76e-03 63.730 57
CPL -0.273 -0.718 0.864 115.451 -32.417 260.725 4.02e-02 -2.07e-02 5.32e-02 59.480 56
=== Fluence/Peak Flux Summary ===
Model Band1 Band2 Band3 Band4 Band5 Total
15-25 25-50 50-100 100-350 15-150 15-350 keV
Fluence PL 1.64e-07 3.11e-07 4.57e-07 1.44e-06 1.29e-06 2.37e-06 erg/cm2
90%_error_low -2.30e-08 -2.71e-08 -4.65e-08 -2.94e-07 -1.13e-07 -3.31e-07 erg/cm2
90%_error_hi 2.39e-08 2.68e-08 4.62e-08 3.42e-07 1.14e-07 3.70e-07 erg/cm2
Peak flux PL 4.80e-01 6.03e-01 5.53e-01 8.84e-01 1.94e+00 2.52e+00 ph/cm2/s
90%_error_low -9.45e-02 -7.71e-02 -6.41e-02 -1.96e-01 -2.11e-01 -2.77e-01 ph/cm2/s
90%_error_hi 1.01e-01 7.62e-02 6.36e-02 2.27e-01 2.12e-01 2.81e-01 ph/cm2/s
Fluence CPL 1.56e-07 3.20e-07 4.67e-07 9.64e-07 1.27e-06 1.91e-06 erg/cm2
90%_error_low -2.75e-08 -3.13e-08 -5.03e-08 -4.92e-07 -1.23e-07 -5.04e-07 erg/cm2
90%_error_hi 2.80e-08 3.22e-08 5.15e-08 7.86e-07 1.22e-07 5.99e-07 erg/cm2
Peak flux CPL 3.86e-01 6.32e-01 6.11e-01 4.35e-01 1.88e+00 2.06e+00 ph/cm2/s
90%_error_low -1.16e-01 -8.66e-02 -8.12e-02 -1.88e-01 -2.17e-01 -2.96e-01 ph/cm2/s
90%_error_hi 1.25e-01 8.76e-02 8.36e-02 3.55e-01 2.17e-01 3.97e-01 ph/cm2/s
======================================================================
Special notes of this burst